会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Chondroitinase I and chondroitinase II producing mutants of P. vulgaris
    • 软骨素酶I和软骨素酶II产生普通寻常型突变体
    • US5888798A
    • 1999-03-30
    • US476261
    • 1995-06-07
    • Jason Arnold LotvinKiran M. KhandkeMark E. Ruppen
    • Jason Arnold LotvinKiran M. KhandkeMark E. Ruppen
    • C12N15/09C12N1/21C12N9/88C12Q1/527C12R1/19C12R1/37C12N1/20
    • C12R1/37C12N9/88Y10S435/873
    • Mutant Proteus vulgaris strains are provided that, when grown in the absence of an exogenous chondroitinase I and II inducer, produce P. vulgans chondroitinase I and chondroitinase II proteins. The mutants typically produce chondroitinase I and II proteins in the absence of exogenous inducers and in amounts in excess of those produced by wild-type P. vulgaris strains induced with such inducers. Two classes of such mutants, Classes 1 and 2, are disclosed. Class 1 and class 2 mutants differ in the relative amounts of chondroitinases I and II produced when cells are grown in casamino acids--supplemented minimal medium. Additional phenotypic variants that release chondroitinase I protein into the culture medium are provided as well. Also contemplated is a method for producing P. vulgaris chondroitinase I and II proteins. The mutant cells described above are cultured in the absence of a conventional exogenous chondroitinase I and II inducer, after which the cells are harvested and chondroitinase I and II are recovered from the harvested cells. A method for in situ detection of chondroitinase I and II production by bacterial colonies is also provided.
    • 提供突变型普通变形杆菌,当在不存在外源性软骨素酶I和II诱导物的情况下生长时,产生P. vulgans软骨素酶I和软骨素II蛋白。 突变体通常在没有外源性诱导物的情况下产生软骨素酶I和II蛋白,并且其量超过由这种诱导物诱导的野生型寻常型菌株产生的那些。 披露了两类这类突变体,1类和2类。 1类和2类突变体在细胞生长在补充有酪氨酸氨酸的基本培养基中时产生的软骨素酶I和II的相对量不同。 还提供将软骨素酶蛋白质释放到培养基中的其他表型变体。 还考虑了用于产生寻常性软骨素酶I和II蛋白质的方法。 在不存在常规外源性软骨素酶I和II诱导剂的情况下培养上述突变细胞,之后收获细胞,从收获的细胞中回收软骨素酶I和II。 还提供了通过细菌菌落原位检测软骨素酶I和II产生的方法。